1. Add checking for data, only load data from API if the list load from database is empty

2. Add testing code in Database.save() and disable testing code in main

lib/db/database.dart

@@ -14,37 +14,49 @@ class Database {
   List<Character> get storedCharacters {
     //TODO: load the characters from a real database.
 
-    //*** Must be replaced
-    //Currently, the characters are not loaded from the database, but simply created and returned afterwards
-    final List<Character> characters = [
-      Character(
-        name: "Jon Snow",
-        gender: "Male",
-        aliases: [
-          "Lord Snow",
-          "Ned Stark's Bastard",
-          "The Snow of Winterfell",
-          "The Crow-Come-Over",
-          "The 998th Lord Commander of the Night's Watch",
-          "The Bastard of Winterfell",
-          "The Black Bastard of the Wall",
-          "Lord Crow"
-        ],
-      ),
-      Character(
-        name: "Brandon Stark",
-        gender: "Male",
-        aliases: ["Bran", "Bran the Broken", "The Winged Wolf"],
-      ),
-    ];
+    List<Character> characters = [];
+
+    // //*** Must be replaced
+    // //Currently, the characters are not loaded from the database, but simply created and returned afterwards
+    // characters = [
+    //   Character(
+    //     name: "Jon Snow",
+    //     gender: "Male",
+    //     aliases: [
+    //       "Lord Snow",
+    //       "Ned Stark's Bastard",
+    //       "The Snow of Winterfell",
+    //       "The Crow-Come-Over",
+    //       "The 998th Lord Commander of the Night's Watch",
+    //       "The Bastard of Winterfell",
+    //       "The Black Bastard of the Wall",
+    //       "Lord Crow"
+    //     ],
+    //   ),
+    //   Character(
+    //     name: "Brandon Stark",
+    //     gender: "Male",
+    //     aliases: ["Bran", "Bran the Broken", "The Winged Wolf"],
+    //   ),
+    // ];
+
     return characters;
     //*** Replace up to here
   }
 
   //The method is to store a list of GoT characters in a database
-  void save({required List<Character> characters}) {
+  static void save({required List<Character> characters}) async {
     if (characters.isNotEmpty) {
       //TODO: save `characters` into a real database.
+
+      var box = await Hive.openBox('testBox');
+      var person = Character(
+        name: 'Dave',
+        gender: 'Female',
+        aliases: ['Linda', 'Marc', 'Anne'],
+      );
+      await box.put('dave', person);
+      print("//// TEST //  : ${box.get('dave').name} got "); // Dave
     }
   }
 }

lib/main.dart

@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:assignment_1_base_project/db/character.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 
-///// HIVE : Example /////
+// ///// HIVE : Example /////
 // part 'main.g.dart';
 
 // @HiveType(typeId: 1)
@@ -25,25 +25,20 @@ import 'package:hive_flutter/hive_flutter.dart';
 // }
 
 void main() async {
-  print("============ MAIN START =================");
+  // print("============ MAIN START =================");
   //// Database Init
   await Hive.initFlutter(); // Initializing database
   Hive.registerAdapter(CharacterAdapter()); //add TypeAdapater
 
-  // var path = Directory.current.path;
-  // Hive
-  //   ..init(path)
-  //   ..registerAdapter(CharacterAdapter());
-
-  ///// HIVE : Testing /////
-  var box = await Hive.openBox('testBox');
-  var person = Character(
-    name: 'Dave',
-    gender: 'Female',
-    aliases: ['Linda', 'Marc', 'Anne'],
-  );
-  await box.put('dave', person);
-  print(box.get('dave').name); // Dave
+  // ///// HIVE : Testing /////
+  // var box = await Hive.openBox('testBox');
+  // var person = Character(
+  //   name: 'Dave',
+  //   gender: 'Female',
+  //   aliases: ['Linda', 'Marc', 'Anne'],
+  // );
+  // await box.put('dave', person);
+  // print("//// TEST //  : ${box.get('dave').name} got "); // Dave
 
   print("============ APP START =================");
   runApp(

lib/networking/api.dart

@@ -4,6 +4,7 @@ import 'dart:convert';
 
 import 'package:http/http.dart' as http;
 
+import 'package:assignment_1_base_project/db/database.dart';
 import 'package:assignment_1_base_project/db/character.dart';
 
 class API {
@@ -80,6 +81,7 @@ class API {
     // print("//// DEBUG --- API Result --- // _characters:${_characters}");
     print(
         "//// DEBUG --- API Result --- // _characters.length: ${_characters.length} - number of valid data saved"); // Query records number
+    Database.save(characters: _characters);
 
     return _characters;
   }

lib/screens/characters_list_screen.dart

@@ -18,13 +18,17 @@ class _CharactersListScreenState extends State<CharactersListScreen> {
     // first the characters are loaded from the database and displayed
     characters = Database().storedCharacters;
 
-    // then the characters are loaded from the API and displayed as soon as they are there
-    API().fetchRemoteGoTCharacters().then((characters) {
-      setState(() {
-        // the setState method re-renders the UI
-        this.characters = characters;
+    //// Check if characters empty (or set to false if null), then load data from API
+    if (characters?.isEmpty ?? false) {
+      // then the characters are loaded from the API and displayed as soon as they are there
+      API().fetchRemoteGoTCharacters().then((characters) {
+        setState(() {
+          // the setState method re-renders the UI
+          this.characters = characters;
+        });
       });
-    });
+    }
+
     super.initState();
   }